1 definition by Kurt Kemmling

Top Definition
a pile of rocks and/or debris, placed upstream in front of bridge abutments in rivers and streams, used to prevent the erosion of the bridge foundation. Also used to prevent river banks from eroding.
We need to place some riprap in front of these new bridge pilings we just poured, so they won't erode.
by Kurt Kemmling August 16, 2004

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×